TY  - JOUR
A1  - Malic, E.
A1  - Weber, C.
A1  - Richter, M.
A1  - Atalla, V.
A1  - Klamroth, Tillmann
A1  - Saalfrank, Peter
A1  - Reich, Sebastian
A1  - Knorr, A.
T1  - Microscopic model of the optical absorption of carbon nanotubes functionalized with molecular spiropyran photoswitches
JF  - Physical review letters
N2  - The adsorption of molecules to the surface of carbon nanostructures opens a new field of hybrid systems with distinct and controllable properties. We present a microscopic study of the optical absorption in carbon nanotubes functionalized with molecular spiropyran photoswitches. The switching process induces a change in the dipole moment leading to a significant coupling to the charge carriers in the nanotube. As a result, the absorption spectra of functionalized tubes reveal a considerable redshift of transition energies depending on the switching state of the spiropyran molecule. Our results suggest that carbon nanotubes are excellent substrates for the optical readout of spiropyran-based molecular switches. The gained insights can be applied to other noncovalently functionalized one-dimensional nanostructures in an externally induced dipole field.
Y1  - 2011
U6  - https://doi.org/10.1103/PhysRevLett.106.097401
SN  - 0031-9007
VL  - 106
IS  - 9
PB  - American Physical Society
CY  - College Park
ER  -